73210427
Apr 5, 1979
Nov 24, 1981
Computerized Radiotherapy Treatment Planning Systems Consisting of Computers, Sonic Digitizers, Graphic Display Terminals, Printers, Plotters, and Computer Programs Recorded on Tapes, Discs, or Cards
Electrical and Scientific ApparatusRendering Instruction in the Use, Care, and Maintenance of Radiotherapy Treatment Planning Systems
Education and Entertainment